The document discusses the Dada art movement that emerged in the early 20th century in reaction to World War I. Dadaists used absurd and nonsensical performances, artworks, and writings to ridicule contemporary culture and traditional artistic norms. Notable Dada artists included Marcel Duchamp, who created "readymades" by exhibiting everyday objects as art, Francis Picabia, whose works featured mechanical forms and sexual themes, and Kurt Schwitters, who assembled art from debris in his "Merz" works. Dada began in Zurich in 1916 and spread to other cities, before declining by the late 1920s.